patch 9.0.0939: still using simplified mappings when using kitty protocol

Problem:    Still using simplified mappings when using the kitty keyboard
            protocol.
Solution:   Use the kitty_protocol_state value to decide whether to use
            simplified mappings.  Improve how seenModifyOtherKeys is set and
            reset.

src/version.c

@@ -695,6 +695,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    939,
 /**/
     938,
 /**/